Antifriction drawer-slide.



Patented January 31, 1905.

ADAM DTCKEY, oF BOSTON, MASSACHUSETTS.

ANTIFRlGTloN DRAWER-SLIDE.

SPECIFICATION forming part of Letters Patent No.1781,275, dated January31, 1905.

Application iiled October 1, 1904. Serial No. 226,743.

To @ZZ whom it may concern,.-

` Be it known that I, ADAM DIGKEY, of Boston, county of Suffolk, Stateoi' Massachusetts, have invented an Improvement in AntifricltionDrawer-Slides, of which the following conveniently carried in stock,notwithstanding the wide variation in sizes required, and,furthermore,may be assembled on short notice and a very durabledrawer-sllde produ ced.

Figure 1 shows in side elevation a drawer-` Fig. 21s aV slide embodyingthis invention. plan view of the drawer-slide. Fig. 3 is a transversesection of the drawer-slide, taken on the dotted line 3 3. Fig. 1. Fig.4 is a side View of a portion of the frame-bar. Fig.' 5 is a transversesection of the frame-bar shown in Fig. 4, taken on the dotted line 6 6.Figs. 6 and 7 are enlarged side and plan views, respectively, of thejournal-support. a represents the drawer, having attached to its side ahorizontal strip or bar a', adapted to rest upon the drawer-slide to bedescribed.

represents a horizontal strip or'bar attached to the casing, upon whichthe drawer- Slide rests. The drawer-slide consists of a horizontalframe-bar c, of any suitable length, prepared in the following manner toreceive a Set of antifriction-rolls: The frame-bar o has a shallowgroove formed along one side of it throughout its length, as shown at 0,and at intervals along the grooved side of said frame-bar circularrecesses c2 are formed adapted to receive the antifriction-rolls.

` The antifriction-rolls are made as circular disks d, each having acentral hole to receive the journal. To support the antifrictionrolls d,metallic plates e, of suitable dimensions, are placed in the lgroove inthe side of the frame-bar c, crossing the circular recesses c2, and saidplates e have formed upon one side of them a cylindrical lug e', adaptedto project into the central holes in the antifriction-rolls and serve asjournals upon which said rolls revolve. The metallic plates e aresecured in place by screws or otherwise. The plates e are made of athickness substantially equal to the depth of the groove, so that whenplaced therein they will not project beyond the outer side or face ofthe frame-bar, and thereby obstruct free longitudinal movement of thedrawer-slide. The antifriction-rolls and the metallic plates having thejournals and the grooved frame-bars can' be conveniently carried in'stock at all times, and the device can be assembled by merely boringcircular recesses in the grooved frame-bars at the required points andattaching the antifriction-rolls. j

At the rear or inner end'of the frame-bar an upright extension isprovided, the n'extremity of which is designed to engage the casing asthe draweris slid in and-out.

Having thus described Vmy invention, what I claim as new, and desire tosecure by Letters Patent, is l 1. In an antifriction'drawer-slide, aframebar having circular recesses in one side of it, antifriction-rollscontainedin said recesses, and journal-supporting plates crossing saidrecesses, which are attached to said frame-bar, substantially asdescribed.

2. In an antiriction drawer-slide, a framebar having circular recessesin one side of it, antifriction-rolls contained in said recesses,metallic plates having journals thereon for said rolls, and means forsecuring said plates to the frame-bar, Asubstantially as described.

l3. In an antifriction drawer-slide, a framebar having a groove in oneside of it extending longitudinally thereof, and having circularrecesses in its grooved slde at intervals,

antifriction-rolls placed in said recesses, and metallic plates placedin said groove, crossing said recesses, having laterally-extended lugswhich project into central holes in the antifriction-rolls, and serve asjournals therefor, and means for attaching said plates to the frame-bar,substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of .two subscribing witnesses.

ADAM DTCKET.vv

Witnesses:

L. H. HARRIMAN, H. B. DAVIS.

